TV-series
UFOs: Investigating the Unknown - Season Two
New revelations fuel the search to unravel the mysteries surrounding the UFO phenomenon. Areas explored include increasing calls for government transparency, the roles independent scientists and citizens are playing in the investigation, and the deeply personal stories of those who say they’ve come face to face with the unknown.
UFOs: Investigating the Unknown Season Two | Official Trailer | National Geographic
UFOs: Investigating the Unknown Season Two | Official Trailer | National Geographic
See more (external link) 
https://www.youtube.com/watch?v=roRidodYKKw